<datatype>

<datatype> specifies the declared value for an attribute, by referring to any datatype defined by the chosen schema language. [1.4.2 Datatype Macros 22.4.5 Attribute List Specification]
組件tagdocs — 22 Documentation Elements
屬性att.global (@xml:id, @n, @xml:lang, @rend, @rendition, @xml:base, @xml:space) (att.global.linking (@corresp, @synch, @sameAs, @copyOf, @next, @prev, @exclude, @select)) (att.global.analytic (@ana)) (att.global.facs (@facs)) (att.global.change (@change))
minOccurs (minimum number of occurences) indicates the minimum number of times this datatype may occur in the specification of the attribute being defined
狀態 非必備的
資料類型 

<rng:ref name="data.count"/>
data.count
maxOccurs (maximum number of occurences) indicates the maximum number of times this datatype may occur in the specification of the attribute being defined
狀態 非必備的
資料類型 

<rng:choice>
 <rng:ref name="data.count"/>
 <rng:value>unbounded</rng:value>
</rng:choice>
data.count | "unbounded"
屬於
可包含在於
tagdocs: attDef
可包含空白元素
宣告

<rng:element name="datatype">
 <rng:ref name="att.global.attributes"/>
 <rng:ref name="att.global.linking.attributes"/>
 <rng:ref name="att.global.analytic.attributes"/>
 <rng:ref name="att.global.facs.attributes"/>
 <rng:ref name="att.global.change.attributes"/>
 <rng:optional>
  <rng:attribute name="minOccurs" a:defaultValue="1">
   <rng:ref name="data.count"/>
  </rng:attribute>
 </rng:optional>
 <rng:optional>
  <rng:attribute name="maxOccurs" a:defaultValue="1">
   <rng:choice>
    <rng:ref name="data.count"/>
    <rng:value>unbounded</rng:value>
   </rng:choice>
  </rng:attribute>
 </rng:optional>
 <rng:zeroOrMore>
  <rng:group>
   <rng:ref name="macro.schemaPattern"/>
  </rng:group>
 </rng:zeroOrMore>
</rng:element>
element datatype
{
   att.global.attributes,
   att.global.linking.attributes,
   att.global.analytic.attributes,
   att.global.facs.attributes,
   att.global.change.attributes,
   attribute minOccurs { data.count }?,
   attribute maxOccurs { data.count | "unbounded" }?,
   macro.schemaPattern*
}
例子
<datatype>
 <rng:data type="token"/>
</datatype>
例子
<datatype>
 <rng:ref name="data.enumerated"/>
</datatype>
例子

The encoding in the following example requires that the attribute being defined contain at least two URIs in its value, as is the case for the targets attribute of join.

<datatype minOccurs="2" maxOccurs="unbounded">
 <rng:ref name="data.pointer"/>
</datatype>